<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片区域 -->
        <el-card>
           <el-row :gutter="20">
               <el-col :span="9">
                 <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button @click="getUserList" slot="append" icon="el-icon-search"></el-button>
                </el-input>
               </el-col>
               <el-col :span="5">
                   <el-button type="primary" @click="adddialogVisible = true">添加用户</el-button>
               </el-col>
           </el-row>

        <!-- 用户列表区 -->
        <el-table :data="userlist" stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态" prop="mg_state">
                <!-- 作用域插槽 -->
                <template slot-scope="scope">
                    <!-- {{scope.row}} -->
                    <el-switch v-model="scope.row.mg_state" 
                    @change="userStateChanged(scope.row)">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" prop="role_name" width="180px">
                <template slot-scope="scope">
                    <!-- 编辑按钮 -->
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showeditDialog(scope.row.id)"></el-button>
                    <!-- 删除按钮 -->
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                    <!-- 分配角色按钮 -->
                    <el-tooltip class="item" effect="dark" content="角色分配" placement="top" :enterable="false">
                        <el-button @click="setRole(scope.row)" type="warning" icon="el-icon-setting" size="mini"></el-button>
                    </el-tooltip>
                </template>
            </el-table-column>
        </el-table>

        <!-- 分页 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户的弹窗 -->
        <el-dialog
            title="添加用户"
            :visible.sync="adddialogVisible"
            width="50%"
            @close="addDialogClosed">
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
            <el-button @click="adddialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 编辑用户的弹窗 -->
        <el-dialog
            title="修改用户"
            :visible.sync="editDialogVisiable"
            width="50%">
            <el-form ref="editFormRef" :model="editForm" label-width="70px" :rules="editFormRules">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisiable = false " @close="editDialogClosed">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的弹窗 -->
        <el-dialog
            title="分配角色" :visible.sync="setRoleDialogVisible" width="50%"
            @close="setRoleDialogClosed"
            >
            <div>
                <p>当前用户:{{userInfo.username}}</p>
                <p>当前角色:{{userInfo.role_name}}</p>
                <p>分配新角色:
                    <el-select v-model="selectRoleId" placeholder="请选择">
                        <el-option
                            v-for="item in rolesList"
                            :key="item.id"
                            :label="item.roleName"
                            :value="item.id">
                        </el-option>
                        </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>


<script>
export default {
    data(){

        //验证手机号的规则
        var checkMobile = (rule, value, callback) => {
            //验证手机号的正则表达式
            const regMobile = /^1[3|4|5|7|8][0-9]{9}$/

            if(regMobile.test(value)){
                return callback()
            }
            callback(new Error('请输入合法的手机号'))
        }

        //验证邮箱的规则
        var checkEmail = (rule,value,callback) =>{
            //验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/
            if(regEmail.test(value)){
                return callback()
            }
            callback(new Error('请输入合法的邮箱地址'))
        }

        return{
            //获取用户列表的参数对象
            queryInfo:{
                query: '',
                pagenum: 1,
                pagesize: 10
            },
            userlist: [],
            total : 0,
            adddialogVisible : false,
            //添加用户的表单数据
            addForm: {
                username:'',
                password:'',
                email: '',
                mobile: ''
            },
            //添加表单的验证规则对象
            addFormRules: {
                username:[
                    {
                        required: true,
                        message: '请输入用户名',
                        trigger: 'blur'
                    },
                    {
                        min: 5,
                        max: 10,
                        message: '用户名的长度在5-10之间',
                        trigger: 'blur'
                    }
                ],
                password: [
                    {
                        required: true,
                        message: '请输入密码',
                        trigger: 'blur'
                    },
                    {
                        min: 6,
                        max: 16,
                        message: '密码的长度在6-16之间',
                        trigger: 'blur'
                    }
                ],
                email: [
                    {
                        required: true,
                        message: '请输入邮箱',
                        trigger: 'blur'
                    },
                    {
                        validator: checkEmail,
                        trigger : 'blur'
                    }
                ],
                mobile: [
                    {
                        required: true,
                        message: '请输入手机号码',
                        trigger : 'blur'
                    },
                    {
                        validator: checkMobile,
                        trigger: 'blur'
                    }
                ]
            },
            //修改用户的弹窗默认关闭
            editDialogVisiable: false,
            //查询到的用户信息对象
            editForm: '',
            //编辑页面的验证规则
            editFormRules: {
                email:[
                    {
                        required: true,
                        message: '请输入用户邮箱',
                        trigger: 'blur'
                    },
                    {
                        validator: checkEmail,
                        trigger: 'blur'
                    }
                ],
                mobile:[
                    {
                        required: true,
                        message: '请输入用户手机号'
                    },
                    {
                        validator: checkMobile,
                        trigger: 'blur'
                    }
                ]
            },
            setRoleDialogVisible: false,
            //需要被分配角色的用户信息
            userInfo: {},
            rolesList: [] , //所有角色的数据列表

            //已选中的角色ID值
            selectRoleId: ''
        }
    },
    //生命周期
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
        const {data: res } =  await this.$http.get('users',{ 
            params: this.queryInfo 
            })//发起Ajax数据请求
            if(res.meta.status !==200) {
                return this.$message.error('获取用户列表失败')
            }
            this.userlist = res.data.users
            this.total = res.data.total
            console.log(res)
        },
        // 监听pagesize改变的事件
        handleSizeChange(newSize){
            console.log(newSize)
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听页码值改变的事件
        handleCurrentChange(newPage){
            console.log(newPage)
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 监听 switch 开关状态的改变
        async userStateChanged(userinfo){
            console.log(userinfo)
            const { data : res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status !== 200) {
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error("更新用户状态失败!")
            }
            this.$message.success("更新用户状态成功!")
        },
        //添加用户对话框关闭后自动重置表单内容
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击确定添加用户
        addUser(){
            this.$refs.addFormRef.validate(async valid =>{
                if(!valid) return
                //发起添加用户的网络请求
                const {data: res} = await this.$http.post('users',this.addForm)
                if(res.meta.status !== 201) {
                    this.$message.error('添加用户失败！')
                }
                this.$message.success('添加用户成功！')
                //关闭对话框
                this.adddialogVisible = false
                //刷新列表
                this.getUserList()
            })
        },
        //编辑用户
        async showeditDialog(id){
            const {data: res} = await this.$http.get('users/'+id)
            if(res.meta.status !== 200){
                return this.$message.error('查询用户信息失败！')
            }
            this.editForm = res.data
            this.editDialogVisiable = true
        },
        //监听 编辑用户 页面 重置
        editDialogClosed(){
            this.editFormRef.resetFields()
        },
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid =>{
                if(!valid) return
                //发起网络请求
                const {data: res} = await this.$http.put('users/'+this.editForm.id,{
                    email: this.editForm.email,
                    mobile: this.editForm.mobile
                })
                if(res.meta.status!==200){
                    return this.$message.error('更新用户信息失败！')
                }
                //关闭对话框
                this.editDialogVisiable = false
                //刷新列表
                this.getUserList()
                //提示修改成功
                this.$message.success('更新用户信息成功！')
            })
        },
        async removeUserById(id){
            //弹框提示是否删除用户
                const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(error => error)//捕捉错误
            //如果确认删除confirmResult返回字符串confirm
            //如果取消删除 返回字符串cancel

            if(confirmResult !== 'confirm'){
                return this.$message.info('已取消删除')
            }
            const {data: res} = await this.$http.delete('users/'+id)
            if(res.meta.status !== 200){
                return this.$message.error('删除用户失败！')
            }
            this.$message.success('删除用户成功！')
            this.getUserList()
        },
        async setRole(userInfo){
            this.userInfo = userInfo
            //获取所有的角色列表
            const {data: res} = await this.$http.get('roles')
            if(res.meta.status!==200){
                return this.$message.error('获取角色列表失败！')
            }
            this.rolesList = res.data
            this.setRoleDialogVisible = true
        },
        async saveRoleInfo(){
            if(!this.selectRoleId){
                return this.$message.error('请选择要分配的角色')
            }

            const {data : res} = await this.$http.put(`users/${this.userInfo.id}/role`,{
                rid : this.selectRoleId
            })
            if(res.meta.status !== 200){
                return this.$message.error('更新角色失败！')
            }
            this.$message.success('更新角色成功！')
            this.getUserList();
            this.setRoleDialogVisible = false
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed(){
            this.selectRoleId = ''
        }
    }
}
</script>

<style scoped>

</style>